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<head><meta charset="utf-8"><title>bootstrap times went down 20% percent on Feb 20 · t-compiler/performance · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/index.html">t-compiler/performance</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html">bootstrap times went down 20% percent on Feb 20</a></h3>

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<a name="227270303"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/227270303" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#227270303">(Feb 22 2021 at 14:04)</a>:</h4>
<p>Look at this graph! <a href="https://perf.rust-lang.org/bootstrap.html?start=2021-02-20&amp;end=2021-02-21">https://perf.rust-lang.org/bootstrap.html?start=2021-02-20&amp;end=2021-02-21</a></p>



<a name="227270440"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/227270440" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> bjorn3 <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#227270440">(Feb 22 2021 at 14:05)</a>:</h4>
<p>That was <a href="https://github.com/rust-lang/rust/pull/70951">https://github.com/rust-lang/rust/pull/70951</a>.</p>



<a name="227270480"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/227270480" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#227270480">(Feb 22 2021 at 14:05)</a>:</h4>
<p>I think you're right :) <a href="https://perf.rust-lang.org/compare.html?start=e7c23ab933ebc1f205c3b59f4ebc85d40f67d404&amp;end=83b30a639d5abd1270ade35d9bd92271f5a5ba18&amp;stat=wall-time">https://perf.rust-lang.org/compare.html?start=e7c23ab933ebc1f205c3b59f4ebc85d40f67d404&amp;end=83b30a639d5abd1270ade35d9bd92271f5a5ba18&amp;stat=wall-time</a></p>



<a name="227270534"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/227270534" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#227270534">(Feb 22 2021 at 14:06)</a>:</h4>
<p><span class="user-mention" data-user-id="248906">@cjgillot</span> congratulations, that's amazing :D</p>



<a name="227780045"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/227780045" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#227780045">(Feb 25 2021 at 15:00)</a>:</h4>
<p>is there a reason we don’t have a line showing the sum of all times?</p>



<a name="228344318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/228344318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#228344318">(Mar 02 2021 at 02:45)</a>:</h4>
<p>it shows the sum of bootstrap times towards the bottom: <a href="/user_uploads/4715/iGWudy82BqCKKIi8aoTpSZxe/image.png">image.png</a></p>
<div class="message_inline_image"><a href="/user_uploads/4715/iGWudy82BqCKKIi8aoTpSZxe/image.png" title="image.png"><img src="/user_uploads/4715/iGWudy82BqCKKIi8aoTpSZxe/image.png"></a></div>



<a name="228344730"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/228344730" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#228344730">(Mar 02 2021 at 02:51)</a>:</h4>
<p>well, that's not on the graph</p>



<a name="228344736"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/247081-t-compiler/performance/topic/bootstrap%20times%20went%20down%2020%25%20percent%20on%20Feb%2020/near/228344736" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/247081-t-compiler/performance/topic/bootstrap.20times.20went.20down.2020.25.20percent.20on.20Feb.2020.html#228344736">(Mar 02 2021 at 02:52)</a>:</h4>
<p>we should add it to the graph</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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